Online Parts Store › Phillips Machine Screw - Flat Head, 3/8"-16 x 3" Image 1 of 1 Phillips Machine Screw - Flat Head, 3/8"-16 x 3" $31.11 18-8 Stainless Steel. Add To Cart Added! 18-8 Stainless Steel. You Might Also Like Stainless Fender Washer #8, .050" Thick, OD 3/4" $21.67 Phillips Tapping Screws - Oval Head, #10 x 1-3/4" $26.77 Phillips Tapping Screw - Pan Head, #10 x 2-1/2" $37.66 Phillips Tapping Screws - Flat Head, #12 x 3" $42.89 Phillips Tapping Screws - Oval Head, #10 x 3/4" $23.24